Vero 4k stutter with some dvb-t streams since nov. update

Hi!
some of my channels have heavy “stutter” since the november update:

audio is fine…

here’s the kodi logs:

i heave tvheadend server on my unraid and stream it to my vero with the tvheadend plugin.
the channels work fine when i stream them on my windows machine (with vlc).
the problem appears only with 4 dvb-t channels (total dvb-t channels ~10), dvb-s channels all work fine.

obviously it’s the channels my wife needs the most :roll_eyes:
any help appreciated :grinning:

Can you upload full logs?

Are recordings affected?

1 Like

recordings have the same problem.
https://paste.osmc.tv/ohehunutac

hey sam, were you able to take a look at my logs? (did i get the right one?)

I saw a lot of network errors, but couldn’t see an attempt to play a recording from local storage.

Can you send a problematic recording so I can reproduce?

Thanks

Sam

i don’t know what to say…
i tried to reproduce the problem, but after several reboots and “hardware reboots” (disconnecting power source) the problem disappeared. sorry for the trouble :confused:

Just to say I have a very similar issue Live TV plabyback issue (black screen) - #6 by GoldenEyes - wondering if it’s the tuner?

@sam_nazarko
my problem is back, worse than ever (on all channels, also dvb-s).
tried a completely new setup (reinstalling osmc), still the same…
here’s my log: https://paste.osmc.tv/eniliteruv

  1. made a record
  2. tried to watch the record (stutters)
  3. played the channel (stutters)

i don’t understand this at all. on my fire stick the channels work without any problems (over wifi)…

oh man…
now also videos from my nas have problems.
last episode picture began to stutter and then froze, while sound went on…
https://paste.osmc.tv/arefokinoj
guess my device is dying?

edit: could this be sd-card related?

Hi,

I don’t think your device is failing.

Thanks for providing some logs.

Can you try checking for updates? There’s a newer kernel in the repository which fixes some Ethernet throughput issues. This could explain some issues with playback from your NAS.

If this doesn’t help, I can look further

Sam

iirc i got (and installed) an update yesterday before files from NAS began to freeze / stutter. checked again now > no updates available.

I assume @sam_nazarko wanted to suggest one of the testing versions

Hi

Hopefully the issue is now addressed with the following commit:

I’d appreciate it if you could test this and provide feedback before we potentially release this as an update to other users. To test this update:

  1. Login via the command line
  2. Run the following command to add the staging repository:
    echo 'deb http://apt.osmc.tv buster-devel main' | sudo tee /etc/apt/sources.list.d/osmc-devel.list
  3. Run the following commands to update: sudo apt-get update && sudo apt-get dist-upgrade && reboot
  4. Your system should have have received the update.

Please see if the issue is resolved.

I also recommend you remove /etc/apt/sources.list.d/osmc-devel.list after updating.

I’d also recommend you deactivate the staging repository. You can do so with the following command:
sudo rm /etc/apt/sources.list.d/osmc-devel.list.

Please note that we will automatically disable this update channel after 14 days on your device in case you forget to do so to ensure that your system reverts to the stable update channel.

made the update as suggested, but the problems were still all there:

  • stutter on livetv dvb-t2 via (external) tvheadend server
  • movie freeze (with audio still going on)

here’s the log: https://paste.osmc.tv/eteyezoviz
iirc first i watched dvb-t (stutters), the dvb-s (always over tvheadend server, no problems), then mkv over mysql/nfs (freeze after ~ 5 minutes)

afterwards i checked for updates (via osmc menu) where an update was found and installed (not sure if i was supposed to do this after the things you recommended (i have no yet deactivated the staging repository or removed the *.list file).
tried with the same movie again, but the freeze came again after ~5mins: https://paste.osmc.tv/umohebimac

edit:
i was thinking if something form my old setup (before i made a clean install, see post 8) was missing and i took a look at my old advanced settings… i hadn’t inserted this piece (bc i was thinking there shouldn’t be anything to do with a fresh setup…):

	<cache>
		<buffermode>1</buffermode>
		<memorysize>524288000</memorysize>
		<readfactor>4</readfactor>
	</cache>

copied this into the AS.xml just now and tried to watch a tv show and for a while it went well, then two minor stutter (in ~ half an hour) but in the end the picture froze again…
the dvb-t livetv problem remains completely the same.

There shouldn’t be any need to change the default setting.

That could indicate a network issue have you tried access the NAS from the Vero just after the Video freezes?
Have you tried to playback the file that stops after 5 minutes locally on the Vero from a USB Stick/Disc?

Maybe something changed in the network, we suggest to check your network with iperf3. Please read this howto

what can i say? :elf:
i had this setting in the last years on my vero4k (can’t really remember why) and it worked, so i tried it again. and the freeze came later with this setting…

well, i can watch the same video on a amz fire stick (over wifi with “not so good signal”) without problems.

i can try this in the evening…

nothing changed in the network (well. i didn’t change anything, maybe a component has problems?).
irpef server on unraid server, irpef client on osmc:

client:
osmc@osmc:~$ iperf3 -R -c 192.168.178.222
Connecting to host 192.168.178.222, port 5201
Reverse mode, remote host 192.168.178.222 is sending
[  5] local 192.168.178.25 port 48952 connected to 192.168.178.222 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  11.4 MBytes  95.8 Mbits/sec
[  5]   1.00-2.00   sec  11.2 MBytes  94.2 Mbits/sec
[  5]   2.00-3.00   sec  11.2 MBytes  94.2 Mbits/sec
[  5]   3.00-4.00   sec  11.2 MBytes  94.2 Mbits/sec
[  5]   4.00-5.00   sec  11.2 MBytes  94.1 Mbits/sec
[  5]   5.00-6.00   sec  11.2 MBytes  94.2 Mbits/sec
[  5]   6.00-7.00   sec  11.2 MBytes  94.2 Mbits/sec
[  5]   7.00-8.00   sec  11.2 MBytes  94.1 Mbits/sec
[  5]   8.00-9.00   sec  11.2 MBytes  94.2 Mbits/sec
[  5]   9.00-10.00  sec  11.0 MBytes  92.5 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec   113 MBytes  95.1 Mbits/sec    0             sender
[  5]   0.00-10.00  sec   112 MBytes  94.2 Mbits/sec                  receiver

iperf Done.

server:
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.178.25, port 48950
[  5] local 192.168.178.222 port 5201 connected to 192.168.178.25 port 48952
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  5]   0.00-1.00   sec  12.3 MBytes   103 Mbits/sec    0   53.7 KBytes
[  5]   1.00-2.00   sec  11.2 MBytes  94.1 Mbits/sec    0   48.1 KBytes
[  5]   2.00-3.00   sec  11.2 MBytes  94.1 Mbits/sec    0   67.9 KBytes
[  5]   3.00-4.00   sec  11.2 MBytes  94.1 Mbits/sec    0   62.2 KBytes
[  5]   4.00-5.00   sec  11.2 MBytes  94.1 Mbits/sec    0   56.6 KBytes
[  5]   5.00-6.00   sec  11.2 MBytes  94.1 Mbits/sec    0   56.6 KBytes
[  5]   6.00-7.00   sec  11.2 MBytes  94.1 Mbits/sec    0   62.2 KBytes
[  5]   7.00-8.00   sec  11.2 MBytes  94.1 Mbits/sec    0   56.6 KBytes
[  5]   8.00-9.00   sec  11.2 MBytes  94.1 Mbits/sec    0   50.9 KBytes
[  5]   9.00-10.00  sec  11.2 MBytes  94.1 Mbits/sec    0   5.66 KBytes
[  5]  10.00-10.05  sec  0.00 Bytes  0.00 bits/sec    0   5.66 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  5]   0.00-10.05  sec   113 MBytes  94.6 Mbits/sec    0             sender
[  5]   0.00-10.05  sec  0.00 Bytes  0.00 bits/sec                  receiver

ipref server on osmc, irpef client on unraid server:

client:
Connecting to host 192.168.178.25, port 5201
Reverse mode, remote host 192.168.178.25 is sending
[  4] local 192.168.178.222 port 34128 connected to 192.168.178.25 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  11.2 MBytes  94.1 Mbits/sec
[  4]   1.00-2.00   sec  10.8 MBytes  91.0 Mbits/sec
[  4]   2.00-3.00   sec  11.2 MBytes  94.1 Mbits/sec
[  4]   3.00-4.00   sec  11.2 MBytes  93.8 Mbits/sec
[  4]   4.00-5.00   sec  11.2 MBytes  94.1 Mbits/sec
[  4]   5.00-6.00   sec  11.2 MBytes  94.1 Mbits/sec
[  4]   6.00-7.00   sec  11.2 MBytes  94.1 Mbits/sec
[  4]   7.00-8.00   sec  11.2 MBytes  94.1 Mbits/sec
[  4]   8.00-9.00   sec  11.2 MBytes  94.1 Mbits/sec
[  4]   9.00-10.00  sec  11.2 MBytes  94.1 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   113 MBytes  94.5 Mbits/sec    0             sender
[  4]   0.00-10.00  sec   112 MBytes  93.9 Mbits/sec                  receiver

iperf Done.

server:
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.178.222, port 34126
[  5] local 192.168.178.25 port 5201 connected to 192.168.178.222 port 34128
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  11.6 MBytes  97.0 Mbits/sec    0   76.4 KBytes
[  5]   1.00-2.00   sec  10.9 MBytes  91.8 Mbits/sec    0    115 KBytes
[  5]   2.00-3.00   sec  11.4 MBytes  95.9 Mbits/sec    0    115 KBytes
[  5]   3.00-4.00   sec  11.2 MBytes  93.8 Mbits/sec    0    115 KBytes
[  5]   4.00-5.00   sec  11.1 MBytes  92.8 Mbits/sec    0    127 KBytes
[  5]   5.00-6.00   sec  11.4 MBytes  95.4 Mbits/sec    0    127 KBytes
[  5]   6.00-7.00   sec  11.2 MBytes  94.3 Mbits/sec    0    127 KBytes
[  5]   7.00-8.00   sec  11.6 MBytes  97.5 Mbits/sec    0    189 KBytes
[  5]   8.00-9.00   sec  11.2 MBytes  94.3 Mbits/sec    0    189 KBytes
[  5]   9.00-10.00  sec  10.9 MBytes  91.8 Mbits/sec    0    189 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec   113 MBytes  94.5 Mbits/sec    0             sender

looks good as far as i can see… same results without -R > iperf3 -c <IP of your iperf3-server>

today i made a recording from one of the dvb-t channels i’m having problems with on my fire stick (same setup kodi matrix over unraid/tvheadend) where i have absolutely no problems. the recording plays fine on fire stick. but when i play the recording on my vero4k it’s the same stutter as mentioned in my OP.

don’t know if this helps, but i’ll also post the mediainfo of the 2 video files and 1 recording:

video1 (freeze after a while):

Format                                   : Matroska
Format version                           : Version 4
File size                                : 3.90 GiB
Duration                                 : 1 h 4 min
Overall bit rate mode                    : Variable
Overall bit rate                         : 8 628 kb/s
Writing application                      : mkvmerge v58.0.0 ('Supper's Ready') 64-bit
Writing library                          : libebml v1.4.2 + libmatroska v1.6.4

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4
Format settings                          : CABAC / 4 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 4 frames
Codec ID                                 : V_MPEG4/ISO/AVC
Duration                                 : 1 h 4 min
Bit rate mode                            : Variable
Bit rate                                 : 8 250 kb/s
Maximum bit rate                         : 12.4 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.166
Stream size                              : 3.73 GiB (96%)
Writing library                          : x264 core 157 r2965 861cec4
Encoding settings                        : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=34 / lookahead_threads=5 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=96 / keyint_min=96 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=8250 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=12375 / vbv_bufsize=6187 / nal_hrd=vbr / filler=0 / ip_ratio=1.40 / aq=1:1.00
Default                                  : Yes
Forced                                   : No
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709

Audio
ID                                       : 2
Format                                   : AC-3
Format/Info                              : Audio Coding 3
Commercial name                          : Dolby Digital
Codec ID                                 : A_AC3
Duration                                 : 1 h 4 min
Bit rate mode                            : Constant
Bit rate                                 : 384 kb/s
Channel(s)                               : 6 channels
Channel layout                           : L R C LFE Ls Rs
Sampling rate                            : 48.0 kHz
Frame rate                               : 31.250 FPS (1536 SPF)
Compression mode                         : Lossy
Stream size                              : 178 MiB (4%)
Language                                 : English
Service kind                             : Complete Main
Default                                  : Yes
Forced                                   : No

video2 (freeze after a while):

Format                                   : Matroska
Format version                           : Version 4
File size                                : 2.38 GiB
Duration                                 : 58 min 26 s
Overall bit rate                         : 5 836 kb/s
Writing application                      : mkvmerge v58.0.0 ('Supper's Ready') 64-bit
Writing library                          : libebml v1.4.2 + libmatroska v1.6.4

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4
Format settings                          : CABAC / 4 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 4 frames
Codec ID                                 : V_MPEG4/ISO/AVC
Duration                                 : 58 min 26 s
Bit rate mode                            : Constant
Bit rate                                 : 5 194 kb/s
Nominal bit rate                         : 10 000 kb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.104
Stream size                              : 2.12 GiB (89%)
Default                                  : Yes
Forced                                   : No
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709

Audio
ID                                       : 2
Format                                   : E-AC-3
Format/Info                              : Enhanced AC-3
Commercial name                          : Dolby Digital Plus
Codec ID                                 : A_EAC3
Duration                                 : 58 min 26 s
Bit rate mode                            : Constant
Bit rate                                 : 640 kb/s
Channel(s)                               : 6 channels
Channel layout                           : L R C LFE Ls Rs
Sampling rate                            : 48.0 kHz
Frame rate                               : 31.250 FPS (1536 SPF)
Compression mode                         : Lossy
Delay relative to video                  : 18 ms
Stream size                              : 267 MiB (11%)
Language                                 : English
Service kind                             : Complete Main
Default                                  : Yes
Forced                                   : No

recording:

Format                                   : MPEG-TS
File size                                : 12.9 MiB
Duration                                 : 17 s 640 ms
Overall bit rate mode                    : Variable
Overall bit rate                         : 6 081 kb/s
Original network name                    : Astra Satellite Network 19,2'E

Video
ID                                       : 2201 (0x899)
Menu ID                                  : 1 (0x1)
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4
Format settings                          : CABAC / 5 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 5 frames
Codec ID                                 : 27
Duration                                 : 17 s 400 ms
Bit rate mode                            : Variable
Bit rate                                 : 5 263 kb/s
Maximum bit rate                         : 18.0 Mb/s
Width                                    : 1 280 pixels
Height                                   : 720 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 50.000 FPS
Standard                                 : Component
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.114
Stream size                              : 10.9 MiB (85%)
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709

Audio #1
ID                                       : 2202 (0x89A)
Menu ID                                  : 1 (0x1)
Format                                   : MPEG Audio
Format version                           : Version 1
Format profile                           : Layer 2
Codec ID                                 : 3
Duration                                 : 17 s 640 ms
Bit rate mode                            : Constant
Bit rate                                 : 256 kb/s
Channel(s)                               : 2 channels
Sampling rate                            : 48.0 kHz
Frame rate                               : 41.667 FPS (1152 SPF)
Compression mode                         : Lossy
Delay relative to video                  : -1 s 300 ms
Stream size                              : 551 KiB (4%)
Language                                 : German

Audio #2
ID                                       : 2203 (0x89B)
Menu ID                                  : 1 (0x1)
Format                                   : MPEG Audio
Format version                           : Version 1
Format profile                           : Layer 2
Codec ID                                 : 3
Duration                                 : 17 s 640 ms
Bit rate mode                            : Constant
Bit rate                                 : 256 kb/s
Channel(s)                               : 2 channels
Sampling rate                            : 48.0 kHz
Frame rate                               : 41.667 FPS (1152 SPF)
Compression mode                         : Lossy
Delay relative to video                  : -1 s 300 ms
Stream size                              : 551 KiB (4%)
descriptor_tag_extension                 : 6

hope something of all this information helps :slight_smile:

ok, copied the 3 files to an usb drive (and deleted the chache part - see post 14).
the tvheadend livetv recording from the other kodi client (where livetv and the recording played just fine) on the vero4k has exactly the same problems as over livetv or when i make a recording on the vero.

the mkv file from the usb stick also froze after ~5mins.
here’s another log: https://paste.osmc.tv/oqakulupil

i think the livetv (constant stutter) and the mkv problem (freeze) are different problems, because the mkv/file problem emerged later (no problems before dec, 13th, pretty sure i watched a 4k file without problems on dec, 11th)…

today there was another update, didn’t change anything on my osmc.

as i had a spare rpi4 i tried to set that up with libreelec and (with same tvheadend client and avdancedsettings.xml) everything works there. used the same LAN cable, so i think we can rule network problems out?

please , please do so, i’d prefer my vero4k over the rpi :slight_smile:

@sam_nazarko:
For what it’s worth, the issues in the videoclip OP posted here looks EXACTLY like the issue the other OP and I have on different files streamed through local network (in my case 1080p50) that are described in this thread.

Maybe the changes in the video stack that came with the November update are responsible for the problems?

Edit: While reading through it, this also looks similar: https://discourse.osmc.tv/t/video-hangs-audio-continue/

That issue has already been reported as fixed.